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VOLUME 46 (1987) | ISSUE 10 | PAGE 385
Quantum diffusion of vortices in 2D lattice systems
The temperature dependence of the probability for an interstitial tunneling of vortices in an incoherent regime is derived for several lattice quantum models. The results can be used to describe 2D systems such as a planar ferromagnet, various lattices of tunnel junctions, and the free surface of a quantum crystal.